captioning sponsored by macneil/lehrer productions >> woodruff: president obama was out touting the benefits of the affordable care act today in the latest bid to move past the rocky rollout of healthcare.gov. good evening. i'm judy woodruff. >> ifill: and i'm gwen ifill. also ahead, the biggest municipal bankruptcy in u.s. history gets the green light. a judge ruled detroit can shed billions in debt and reduce public pensions while overhauling its finances. >> woodruff: and tensions are rising in asia, where vice president biden voiced support for japan as it feuds with china over islands and airspace. >> we, the united states, are deeply concerned by the attempt to unilaterally change the status quo in the east china sea. >> those are just some of the stories we are covering on tonight's pbs news hours. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the engine that connects us. >> the william and flora hewlett foundation, working to solve social and environmental problems at home and around the world. >> and with the ongoing supp